11-15 I went out to the pond on Monday at 6:30 and did the same procedure. It was dark so I could not see a lot but I could see the cattails and a couple little minos. The temperature was 43 and the length of day was 9:46. I did not hear anything. I was surprised the water was warmer than the sand for the first time. The leaves are know all mostly fallen.
You are all set with visits. Email me as soon as you have your final graph and conclusions added here!
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